Tropical forest trees, like all green plants, take in carbon dioxide and release oxygen during photosynthesis. Plants also carry out the opposite process, known as respiration, in which they emit carbon dioxide, generally in smaller amounts than taken in during…

Since 1750, it is estimated that about two thirds of anthropogenic climate change CO2 emissions have come from fossil fuel burning (coal and petroleum) and about one third from land use change (mainly deforestation and agricultural). About 45% of this CO2…

Ecological globalization refers to the global environmental issues. Topics of ecological globalization include population growth, access to food, worldwide reduction in biodiversity, the gap between rich and poor as well as between the global North and global…

John Cook’s methodology proves that there is a “pause consensus”. Guest essay by Paul C. “Chip” Knappenberger and Patrick J. Michaels, Center for the Study of Science, Cato Institute The central premise of “global warming” is that…

The Sarychev Peak Volcano, on Matua Island, erupted on June 12, 2009. New research shows that eruptions of this size may contribute more to the recent lull in global temperature increases than previously thought. Credit: NASA Small…

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The 2013 Intergovernmental Panel on Climate Change (IPCC) report states with 95 percent confidence that humans have caused most, and probably all of the rapid global warming over the past 60 years. Approximately 97 percent of climate…

Warning signs today: A recent study of nearly 2, species of plants and animals discovered movement toward the poles at an average rate of 3.8 miles per decade. Similarly, the study found species in alpine areas to be moving vertically at a rate of 20 feet per decade in the second half of the 20th century…

While many organizations and governments use the term Global Warming, there is no universal definition for Global Warming. There is, however, a general understanding of what the term references. According to the Natural Resources Defense Council, global warming is any increase in the average temperature…

What the science says Select a level Basic Intermediate Advanced An enhanced greenhouse effect from CO2 has been confirmed by multiple lines of empirical evidence. Predicting the Future Good scientific theories are said to have ‘predictive power’. In other words, armed only with a theory, we should be…

Garbage that ends up in a landfill contributes to greenhouse gases. Greenhouse gases trap the sun s rays within the Earth s atmosphere and are considered one of the main culprits behind global warming. Humans contribute to the increasing concentration of greenhouse gases - notably carbon dioxide, methane…

Joe Raedle/Getty Images News/Getty Images The term global warming refers to the increase in the average temperature of global surface air and oceans since about 1950, and to continuing increases in those temperatures. Another term for global warming is climate change. Per the Intergovernmental…

Trinity Lake in northern California, one of the state s largest water reservoirs, was at 30 percent capacity in August. This photo shows the lake in February. Credit: California Water Science Center California s severe and ongoing drought is just a taste of the dry years to come, thanks to global warming…

There are many causes of the European refugee crisis, but one thing is certain despite headlines to the contrary: Climate change is not the dominant factor. The refugees fleeing war torn nations like Syria, Iraq, Afghanistan and Libya, as well as those seeking economic opportunities lacking in Africa…

What the science says Select a level Basic Intermediate Empirical measurements of the Earth s heat content show the planet is still accumulating heat and global warming is still happening. Surface temperatures can show short-term cooling when heat is exchanged between the atmosphere and the ocean, which…

Despite reports of a global warming hiatus,a new study shows that the number of areas being affected by extreme heat are on the rise and that the hottest temperatures on the planet are also increasing. The idea of a hiatus comes from reports of recent slowing in the rise of the globe’s average temperature…

WHAT IS THE DIFFERENCE BETWEEN CLIMATE CHANGE AND GLOBAL WARMING? Climate change is the shift in long-term, global weather patterns due to human action; it’s not exclusive to warming or cooling. Climate change includes any change resulting from different factors, like deforestation or an increase in…

Climatologists and climate-change deniers agree on at least one thing this week: everyone is awaiting the landmark U.N. report on climate change that will be presented at next week s meeting of the Intergovernmental Panel on Climate Change (IPCC). The report will detail the scientific and technical elements…

In terms of evolution, the species Homo sapiens is extremely successful. The populations of other species that are positioned similar to us on the food chain tend to max out at about 20 million. We, by contrast, took just 120, years to achieve our first billion members, and then needed only another…

Has burning natural gas instead of coal helped the U.S. economy decarbonize? It s complicated By David Biello | August 3, 2015 Is natural gas enough to combat climate change? A drop in U.S. carbon dioxide pollution in recent years stems from burning natural gas instead of coal. Or does it? Given that…

| Imagine if the world s two largest polluters unilaterally decide to cut emissions of carbon dioxide, the ubiquitous gas responsible for the bulk of global warming. At the same time, a major developing country admits that future growth will have to be balanced with CO2 pollution limits. Meanwhile, an…

It is no secret that there s a growth in luxury goods in India. A 10-minute walk in any big city would attest to this. Over the last few generations, lifestyles have changed significantly, and a culture of consumerism is setting in at a fast pace. It is mind-boggling then, that environment minister Prakash…

Drought ranks second in terms of national weather-related economic impacts, with annual losses nearing $9 billion per year in the U.S. [1] Beyond direct economic impacts, drought can threaten drinking water supplies and ecosystems, and can even contribute to increased food prices. Within the last decade…

First, you calculate the yield factor for a particular type of land for a particular country (e.g. cropland in the UK, or forestry in Japan). This shows the relative productivity of a particular bit of land, so for example you can determine that cropland in the UK is x times as productive as cropland…